Questions on World Geography
QUESTIONS WITH ANSWERS
___________
The Universe
_________
1. Stars which appear single to the naked eye but are double stars when observed by a
telescope, are known as :
(a) cosmic stars
(b) quasars
(c) binaries
(d) novae and supernovae
Ans: (c)
2. What are Sun spots? [Railways 1994]
(a) Regions on earth without winter climate
(b) Desert areas on the sun
(c) Dark patches on the surface of the sun which are cooler areas
(d) Dark patches on the surface of the Sun resulting from a localised fall in the temperature
to about 4000 K
Ans: (d)
3. The brightest star in the sky is: [MBA 1995]
(a) Alfa Centauri
(b) Proxima Centauri
(c) Sirius
(d) Sun
Ans: (d)
4. Pole Star is always seen at one point in the sky whereas other stars are not; this is
because: [CDS 1993]
(a) Pole star rotates with the same period as the earth
(b) Pole star is a star of our own galaxy
(c) Sun and Pole star are in two opposite directions relative to earth
(d) Pole star lies in the axis of spin of the earth
Ans: (d)
5. The outermost layer of Sun is called:
(a) convection zone
(b) photosphere
(c) chromosphere
(d) corona
Ans: (d)
6. Which of the following is the largest of the inner planets? [IAS 1990]
(a) Venus
(b) Mercury
(c) Mars
(d) Earth
Ans: (d)
7. In 1610,Which of the following is the largest of the inner planets? [IAS 1990]
(a) Venus
(b) Mercury
(c) Mars
(d) Earth
Ans: (d)
7. In 1610, Galileo Galilei discovered four moons of which planet?
(a) Saturn
(b) Jupiter
(c) Neptune
(d) None of these
Ans: (b)
8. In order of their distances from the Sun, which of the following planets lie between
Mars and Uranus? [IAS 2008]
(a) Earth and Jupiter
(b) Jupiter and Saturn
(c) Saturn and Earth
(d) Saturn and Neptune
Ans: (b)
9. The planet Mercury is difficult to be observed most of the time because:
(a) it gets hidden behind Venus
(b) it goes too far away from the Earth
(c) it being too close to the Sun, gets hidden by the glare of the Sun
(d) it cannot be seen at night as at that time no sunlight falls on it.
Ans: (c)
10. Comets revolve around: [NDA 1990]
(a) sun
(b) earth
(c) venus
(d) no single heavenly body
Ans: (a)
11. Which two planets of the solar system have no satellites?
(a) Mercury and Venus
(b) Venus and Mars
(c) Mercury and Mars
(d) Venus and Neptune
Ans: (a)
12. The planet having thirteen moons is :
(a) Venus
(b) Mars
(c) Uranus
(d) Neptune
Ans: (d)
13. 'The length of its day and the tilt of its axis are almost identical to those of the earth'.
This is true of: [IAS 2003, 1994]
(a) Uranus
(b) Neptune
(c) Saturn
(d) Mars
Ans: (d)
14. The hottest planet is : [CPO SI 2002]
(a) Mercury
(b) Venus
(c) Jupiter
(d) Saturn
Ans: (b)
15. Which of the following is the brightest planet? [Bank PO 1991]
(a) Mercury
(b) Venus
(c) Mars
(d) Jupiter
Ans: (b)
16. Which of the planets is nearest to the earth? [Asstt Grade 1993]
(a) Jupiter
(b) Venus
(c) Mercury
(d) Mars
Ans: (b)
17. Which planet is known as the Earth's Twin?
(a) Venus
(b) Mars
(c) Uranus
(d) Neptune
Ans: (a)
18. Which one of the following planets takes the same number of days for rotation and
revolution?
(a) Mars
(b) Venus
(c) Mercury
(d) Jupiter
Ans: (b)
19. On which of the following planets of the solar system does the sun rise in the west and
set in the east?
(a) Venus
(b) Mars
(c) Jupiter
(d) Saturn
Ans: (a)
20. Which of the following planets of the solar system has the longest day? [IAS 2003, CDS
1994]
(a) Mercury
(b) Jupiter
(c) Venus
(d) Earth
Ans: (c)
21. Match the following:
A. Largest Planet 1. Mercury
B. Brightest Planet 2. Jupiter
C. Densest Planet 3. Earth
D. Smallest Planet 4. Venus
A B C D
(a) 2 3 4 1
(b) 2 4 3 1
(c) 3 4 1 2
(d) 3 4 2 1
Ans: (b)
22. The exact time taken by the earth for single rotation on its own axis is: [RRB 1991]
(a) 24 hrs
(b) 24 hrs 35 sec
(c) 23 hrs 50 minutes 7.2 sec
(d) 23 hrs 56 minutes 4.09 sec
Ans: (d)
23. Match the following:
Planet Gases in atmosphere
A. Venus 1. Hydrogen and helium
B. Mars 2. Hydrogen, helium, ammonia, methane
C. Saturn 3. Carbon dioxide, amonia and methane
D. Jupiter 4. Carbon dioxide and nitrogen
A B C D
(a) 4 3 1 2
(b) 2 3 4 1
(c) 4 2 3 1
(d) 2 1 4 3
Ans: (a)
24. Consider the following astral bodies:
1. Sirius
2. Venus
3. Mars
The correct sequence in decreasing order of their brightness is : [CDS 1999]
(a) 2, 3, 1
(b) 1, 2, 3
(c) 3, 2, 1
(d) 2, 1, 3
Ans: (d)
25. Lunar Sea refers to :
(a) a small sea on the moon
(b) a sea on earth which experiences high tides due to gravitational attraction of the moon
(c) a dark plain on the moon
(d) a light water body illuminated by the moon-light
Ans: (c)
26. 'Parsec' is the unit of measurement of:
(a) density of stars
(b) astronomical distance
(c) brightness of heavenly bodies
(d) orbital velocity of giant stars
Ans: (b)
27. The sunspots cause: [UP PCS 1995]
(a) aurora borealis and aurora australis
(b) magnetic storms on the surface of the sun
(c) polar auroras
(d) all of these
Ans: (d)
28. The light coming from stars gives the idea of their:
(a) size
(b) rotational speed
(c) mass
(d) temperature
Ans: (d)
29. The Milky way extends through a distance:
(a) 1 light year
(b) 8 light years
(c) 105
light years
(d) 1010 light years
Ans: (c)
30. The period of one revolution of sun around the centre of galaxy is called:
(a) Parsec
(b) Astronomical year
(c) Cosmic year
(d) Light year
Ans: (c)
31. Super Nova is : [CDS 1994]
(a) an asteroid
(b) a black hole
(c) a comet
(d) a dying star
Ans: (d)
32. The altitudes of heavenly bodies appear to be greater than they actually are. This isdue to:
(a) vertical motion of these heavenly bodies
(b) motions of the earth
(c) atmospheric refraction
(d) these are visible because of light of the sun reflected from their surface
Ans: (c)
33. Match the following:
A. Waxing and waning of moon
B. The coning dark shadow
C. The zone of faint shadow
D. A hollow sphere of infinite radius at the centre of which our earth lies
1. Umbra Zone
2. Penumbra Zone
3. Celestial sphere
4. Phases of the moon
A B C D
(a) 4 1 3 2
(b) 3 1 4 2
(c) 4 1 2 3
(d) 3 2 4 1
Ans: (c)
34. The same side of the moon always faces the Earth because: [Railways 1994]
(a) Moon and the Earth have gravitational force
(b) Moon cannot change its position
(c) the period of rotation of the Moon on its axis and period of revolution around' the Earth
is almost the same
(d) the period of rotation of the Moon is not equal to the period of rotation of the Earth
Ans: (c)
35. Who of the following discovered the laws of planetary orbits? [Asstt Comm 2008]
(a) Galileo Galilei
(b) Nicholas Copernicus
(c) Johanries Kepler
(d) Isaac Newton
Ans: (c)
36. Twelve constellations referred to as zodiac are: [IAS 1989]
(a) signs of Roman gods
(b) imaginary region that encompass the path of the planets
(c) a group of stars
(d) none of these
Ans: (c)
37. The term 'meteor' is applied to an interplanetary body:
(a) after it enters the atmosphere of the earth
(b) after it enters the earth's atmosphere and explodes in mid air as a ball of fire
(c) after it enters the earth's atmosphere and lands on the surface of the earth without
exploding in mid-air
(d) before it enters the earth's atmosphere
Ans: (b)
38. Which one of the following statements regarding Shooting Stars is incorrect ? [NDA
1995]
(a) They are meteors
(b) They are the debris which got separated from a comet
(c) They emit light due to extremely high temperature caused by friction while they are
passing through earth's atmosphere
(d) They are a kind of a star
Ans: (d)
39. The planets are kept in motion in their respective orbits by :
(a) their great size and spherical shape
(b) the rotation and density
(c) gravitation and centrifugal force
(d) rotation of the sun on its axis
Ans: (c)
40. The distance of the nearest star besides the sun from the earth is :
(a) 4.9 x 1111m
(b) 95 x1015 m
(c) 4.3 light years
(d) 4.2 light years
Ans: (d)
41. Which of the following celestial bodies bear, 'The Sea of Tranquility' and 'The Ocean of
Storms' ?
(a) Mars
(b) Venus
(c) Moon
(d) Sun
Ans: (c)
42. The time required by moonlight to reach the earth is :
(a) 1 sec
(b) 1.3 sec
(c) 2 sec
(d) 2.3 sec
Ans: (b)
43. The strongest evidence that comets are members of our solar system comes from:
[CDS 1992]
(a) their composition
(b) their effect on the lives of man
(c) the shape of their orbits
(d) the shape and length of their tails
Ans: (a)
44. The constellations of stars appear at different positions in the sky at different times
during night mainly:
(a) because earth rotates about its axis
(b) because earth revolves round the sun
(c) because of optical illusion
(d) because celestial bodies are changing their positions all the time
Ans: (a)
45. Match the following: [CDS 1995]
A. Ursa Major 1. Star
B. Sirius 2. Constellation
C. Milky Way 3. Satellite
D. Titan 4. Galaxy
5. Planet
A B C D
(a) 1 2 3 4
(b) 1 2 4 3
(c) 2 1 4 3
(d) 2 4 1 3
Ans: (c)
46. If there is no Sun, the colour of the sky would be:
(a) orange
(b) blue
(c) yellow
(d) black
Ans: (d)
47. The Saturn rings were discovered by:
(a) Copernicus
(b) Newton
(c) Galileo
(d) none of these
Ans: (c)
48. Foucault experiment is proof of which one of the following? [NDA 2008]
(a) Revolution of Earth
(b) Rotation of Earth
(c) Rotation of Moon
(d) Revolution of Moon
Ans: (b)
49. The radiant energy of the sun is transmitted in the form of:
(a) short waves
(b) long waves
(c) particles
(d) none of these
Ans: (a)
50. The 'Solar Corona' mainly consists of:
(a) cosmic rays
(b) molten lava
(c) gases
(d) ice
Ans: (b)
51. Comets are celestial bodies moving about the solar system in
(a) elliptical or hyperbolic orbits, usually accompanied by a shining tail
(b) elliptical orbits usually accompanied by a long shining tail
(c) hyperbolic orbit always accompanied by a shining head
(d) hyperbolic orbit without projecting any tail or head
Ans: (b)
52. While Venus is seen only for one to two hours either after sunset or before sunrise, Jupiter is seen for the whole night whenever it is visible in the sky. The reason for this
is that: [CDS 2000]
(a) Venus is much smaller than Jupiter
(b) Venus is much closer to the earth than Jupiter
(c) the orbit of Venus is inside the earth's orbit whereas the orbit of Jupiter lies outside the
orbit of the earth
(d) Venus reflects lesser amount of sunlight than Jupiter
Ans: (c)
53. Which of the following statements is/are correct with regard to Milky Way?
1. It is a spiral galaxy.
2. The solar system resides in one of its spiral arms.
Select the correct answer using the codes given below [NDA 2008]
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (c)
54. Among the following which planet takes maximum time for one revolution around the
Sun? [IAS 2003]
(a) Earth
(b) Jupiter
(c) Mars
(d) Venus
Ans: (b)
55. Which one of the following statements is correct with reference to our solar system?
[IAS 2002]
(a) The Earth is the densest of all the planets in our solar system
(b) The predominant element in the composition of Earth is silicon
(c) The Sun contains 75 percent of the mass of the solar system
(d) The diameter of the Sun is 190 times that of the Earth
Ans: (a)
56. The Srnith-tuttle comet will crash with Earth in: [IAS 2003]
(a) 2106 AD
(b) 2116 AD
(c) 2126 AD
(d) 2136 AD
Ans: (b)
57. The correct sequence of the following planets in terms of gravity, in the descending
order is : [IAS 2003]
(a) Saturn, Earth, Neptune, Uranus
(b) Neptune, Uranus, Saturn, Earth
(c) Uranus, Earth, Saturn, Neptune
(d) Earth, Uranus, Neptune, Saturn
Ans: (d)
58. Which of the following gases is most predominant in the Sun?
(a) Helium
(b) Hydrogen
(c) Nitrogen
(d) Ozone
Ans: (b)
59. NASA's Deep Impact space mission was employed to take detailed pictures of which
comet nucleus? [IAS 2007]
(a) Halley's Comet
(b) Hale-Bopp
(c) Hyakutake
(d) Tempel 1
Ans: (d)
60. Consider the following statements:
1. The albedo of an object determines its visual brightness when viewed with reflected
light.
2. The albedo of Mercury is much greater than the albedo of the Earth.
Which of the statements given above is/are correct? [IAS 2008]
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (a)
61. Which of the following statements is/are correct?
1. In comparison to the Jupiter, planet Earth displays eclipses more frequently
2. On Mars, only partial solar eclipses are possible
Select the correct answer using the code given below: [NDA 2011]
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (d)
62. Which of the following statements relating to the planet Venus is/are correct?
1. It is the nearest planet from the Sun.
2. It is only slightly smaller than the Earth.
3. It has no atmosphere.
Select the correct answer using the code given below: [Asstt Commdt 2011]
(a) 1, 2 and 3
(b) 1 and 3 only
(c) 2 only
(d) 1 and 2 only
Ans: (c)
63. What is the difference between asteroids and comets?
1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held
together by rocky and metallic material.
2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are
found mostly between Venus and Mercury.
3. Comets show a perceptible glowing tail, while asteroids do not.
Which of the statements given above is/are correct? [CSAT 2011]
(a) 1 and 2 only
(b) 1 and 3 only
(c) 3 only
(d) 1, 2 and 3
Ans: (b)
64. A blackhole is a : [CDS 1999, 2001]
(a) contracted star with intense gravitational pull
(b) star with very low surface temperature
(c) star with no atmosphere
(d) pulsating star
Ans: (a)
65. Which one of the following is correct? Great Bear is a : [CDS 2008]
(a) galaxy
(b) planet
(c) star
(d) constellation
Ans: (d)
66. Asteroids have their orbits between the planets:
(a) Mercury and Venus
(b) Earth and Mars
(c) Mars and Jupiter
(d) Jupiter and Saturn
Ans: (c)
67. Halley's comet appears once in a period of:
(a) 24 years
(b) 32 years
(c) 76 years
(d) 84 years
Ans: (c)
68. The orbits of planets around the Sun, or of satellites around the Earth, can be : [IFS
1993]
(a) circular and elliptic
(b) circular and hyperbolic
(c) elliptic and parabolic
(d) parabolic and hyperbolic
Ans: (a)
69. To a space traveller on moon, the lunar sky during day time appears:
(a) white
(b) blue
(c) black
(d) red
Ans: (c)
70. The distance between the Earth and the Sun (in million kms.) is :
(a) 111
(b) 149
(c) 168
(d) 193
Ans: (b)
71. Which of the following planets is known as 'Morning Star'?
(a) Mercury
(b) Venus
(c) Mars
(d) Jupiter
Ans: (b)
72. Which planet of the solar system spins on its axis at the fastest rate?
(a) Mercury
(b) Earth
(c) Jupiter
(d) Saturn
Ans: (c)
73. Which planet is known as the 'Watery Planet' ?
(a) Mercury
(b) Earth
(c) Mars
(d) Jupiter
Ans: (b)
74. Which planet looks reddish in the night sky? [Hotel Management 1991]
(a) Mercury
(b) Mars
(c) Jupiter
(d) Saturn
Ans: (b)
75. The correct sequence of planets in the descending order of their equatorial diameter is :
(a) Mars, Mercury, Uranus, Earth
(b) Earth, Mars, Mercury, Uranus
(c) Mercury, Uranus, Mars, Earth
(d) Uranus, Earth, Mars, Mercury
Ans: (d)
Atmosphere
___________
1. The January isotherm taken as a basis for dividing India into tropical and subtropical
zones is : [IAS 1997]
(a) 21° C
(b) 18° C
(c) 12° C
(d) 15° C
Ans: (b)
2. Match the following:
A. Chi nook winds 1. bring bitterly cold conditions
B. Polar Easterlies 2. most regular and constant
C. Trade winds 3. snow eaters
D. Westerlies 4. stormy and powerful in Southern hemisphere
A B C D
(a) 4 1 2 3
(b) 3 1 4 2
(c) 1 3 2 4
(d) 3 1 2 4
Ans: (d)
3. A temperature inversion is most likely to occur under which of the following conditions?
[IAS 2004]
(a) Mountain top in late evening
(b) Windy but cloudy night
(c) Calm, cloudy and humid night
(d) Calm, clear and cool winter night
Ans: (d)
4. Which of the following are the ideal conditions for the phenomenon of temperature
inversion to occur? [IAS 2001]
1. Long nights
2. Cloudy sky
3. Calm and stable air
4. Dry air
(a) I and II
(b) I, II and III
(c) II, III and IV
(d) I, III and IV
Ans: (d)
5. Agents of fog formation do not include:
(a) high relative humidity
(b) diurnal temperatures of short ranges
(c) winter season
(d) rapid radiation
Ans: (b)
6. Which one of the following is the cloud that is dark-grey or black, found at very low
height and brings the real rain? [CDS 2004]
(a) Altocumulus
(b) Cirrus
(c) Cirrostratus
(d) Nimbostratus
Ans: (d)
7. Which one of the following statements is correct? [IAS 2004]
(a) Cirrus clouds are composed of ice crystals
(b) Cirrus clouds exhibit a flat base and have the appearance of rising domes
(c) Cumulus clouds are white and thin, and form delicate patches and give a fibrous and
feathery appearance
(d) Cumulus clouds are classified as high clouds
Ans: (a)
8. The cauliflower shape is associated with which of the following cloud formations?
(a) Stratus
(b) Cumulus
(c) Nimbus
(d) Cirrus
Ans: (b)
9. Winds and air currents differ in the aspect that:
(a) air currents blow much faster than winds
(b) air currents are always moisture laden while the winds are usually dry
(c) the winds blow on lands while air currents blow over seas and oceans
(d) winds are horizontal movements of air while air currents are the vertical movements of
air
Ans: (d)
10. Any type of rainfall has the following aspects:
(a) ascent and descent of air
(b) horizontal movement of air
(c) ascent of air leading to cooling and condensation
(d) all of above
Ans: (c)
11. In the atmosphere of the primitive earth there was no :
(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) ammonia
Ans: (a)
12. What causes snowfall?
(a) When condensation takes place below 0° C and precipitation occurs in the form of flakes
(b) When rain freezes into snow-flakes while passing through the atmosphere
(c) When condensation takes place in form of fog and precipitation occurs as flakes
(d) When the air temperature is much lower than surface temperature
Ans: (a)
13. Heat gain through insolation and heat loss through terrestrial radiation are equal
approximately at which latitude?
(a) 22° W North and South
(b) 40° North and South
(c) 90° North and South
(d) 66° W North and South
Ans: (b)
14. Which of the following places are favourably influenced by the Trade winds?
1. West Indies
2. Brazil
3. Mexico
4. Medagascar
(a) I and II
(b) I, II, III and IV
(c) III and IV
(d) II and IV
Ans: (b)
15. Which of the following are true regarding ionosphere?
1. It is the uppermost layer of atmosphere
2. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized
3.
3. This layer is responsible for reflecting back the radio wave~ transmitted from the earth
(a) I and II
(b) I and II
(c) II and III
(d) I, II and III
Ans: (c)
16. The type of rainfall shown in figure is:
(a) orographic
(b) convectional
(c) cyclonic
(d) relief
Ans: (b)
17. Which of the following is the annual precipitation of an area?
(a) All forms of precipitation converted to the quantity of liquid water
(b) The total actual amount of rain, snow, hail and sleet
(c) The total amount of rain per year, irrespective of snow, hail and sleet
(d) All forms of precipitation measured after conversion to equal quantity of ice
Ans: (a)
18. Fogs formed along, the sea-coast are due to:
(a) advection
(b) radiaton
(c) convection
(d) conduction
Ans: (a)
19. Which of the following is produced by the rapid ascent of moist air?
(a) Frost
(b) Fog
(c) Hail
(d) Snow
Ans: (c)
20. In USA, which one of the following regions Receives heavy rainfall throughout the year
under the influence of Wester lies? [IAS 2009]
(a) North-western
(b) North-eastern
(c) South-western
(d) South-eastern
Ans: (a)
21. The cold and dense air blowing down the mountain slope during the night is known as:
(a) anabatic wind
(b) khamsin
(c) katabatic wind
(d) harmattan
Ans: (c)
22. When the wind is deflected due to the rotation of the Earth, it is called as: [NDA 1994]
(a) geostropic wind
(b) polar wind
(c) westerlies
(d) trade winds
Ans: (a)
23. Which of the following statements is incorrect?
(a) Roaring forties are the southern latitudes where Westerlies are prevalent
(b) Monsoons are local seasonal winds
(c) Doldrum belt lies between 10°N and 10°S latitudes
(d) Horse latitudes are found between Trade winds and Westerlies
Ans: (b)
24. Which one of the following is not a correct example of tropical cyclone? [NDA 1994]
(a) Tornadoes
(e) Typhoons
(b) Hurricanes
(c) Nor westers
Ans: (d)
25. Match the following:
A. Canada 1. Buran
B. Egypt 2. Khamsin
C Argentina 3. Foehn
D. Siberia 4. Chinook
5. Zonda
A B C D
(a) 2 5 3 1
(b) 4 2 5 1
(c) 1 4 5 3
(d) 4 5 3 2
Ans: (b)
26. Temperate cyclones bring along with them:
(a) pleasant weather
(b) snowfall and hail
(c) thunderstorms and torrential rainfall
(d) mild rainfall
Ans: (d)
27. Winds blow:
(a) in regions of low pressure
(b) from a region of high pressure to a region of low pressure
(c) from a region of low pressure to .a region of high pressure
(d) in regions of high pressure
Ans: (b)
28. Doldrums are belts of low atmospheric pressure obtained in the regions adjoining the
equator to a distance of :
(a) 5 degree latitude towards the north only
(b) 5 degree latitude towards the south only
(c) 5 degree latitude towards north and south
(d) 15 degree latitude towards north and south
Ans: (c)
29. The chemically inactive gas present in the atmosphere is :
(a) nitrogen
(b) argon
(c) water vapour
(d) oxygen
Ans: (b)
30. Doldrums are: [NDA 1995]
(a) high latitudes with heavy snow
(b) equatorial zone with low pressure
(c) high pressure areas on mountains
(d) sub-polar zone with high pressure
Ans: (b)
31. With reference to the sub-tropical high pressure belt, consider the following
statements:
1. It is affected by Earth's rotation and descent of winds from higher altitudes.
2. It is dynamically induced and characterized with anti-cyclonic conditions.
Which of the statement(s) given above is/are correct? [IAS 2009]
(a) 1 only
(b) Both 1 and 2
(c) 2 only
(d) Neither 1 nor 2
Ans: (c)
32. Atmospheric pressure exerted on earth is due to:
(a) Gravitational pull of the earth
(b) Rotation of earth
(c) Revolution of earth
(d) Uneven heating of earth
Ans: (a)
33. The Sea breeze blows during: [Senior Observer's Exam 1991]
(a) day from land to sea
(b) day from sea to land
(c) night from land to sea
(d) night from sea to land
Ans: (b)
34. The instrument used for finding out wind-direction is :
(a) anemometer
(b) wind vane
(c) wind gauze
(d) hygrometer
Ans: (b)
35. ‘Beaufort Scale’ is used to measure:
(a) air pressure
(b) wind velocity
(c) wind direction
(d) humidity
Ans: (b)
36. Lapse rate is related to the decrease of : [IFS 1998]
(a) wind velocity with an ascent of 300 feet
(b) humidity with an ascent of 450 feet
(c) temperature at 1°F for an ascent of 330 feet
(d) pressure with an ascent of 500 feet
Ans: (c)
37. Which of the following constituents of the atmosphere are important from the climatic
point of view ? [IFS 1993]
1. Nitrogen
2. Oxygen
3. Carbon dioxide
(a) 1 and 2
(b) 2 and 3
(c) 1, 2 and 3
(d) only 3
Ans: (d)
38. The Trade winds are caused by:
(a) rotation of the earth
(b) revolution of the earth
(c) inflowing movement of air along the earth's surface towards the equator
(d) none of these
Ans: (c)
39. Temperature generally decreases towards the poles because: [IAS 2004]
(a) Air movement is generally towards the. equator
(b) Cold polar air masses prevent surface heating of the land
(c) Cold surfaces do not absorb solar energy as readily as warm surfaces
(d) Progressively lesser solar energy per unit area falls on the earth's surface as we move to
polar regions
Ans: (d)
40. What is the correct sequence of the following zonal pressure belts?
1. Subpolar low
2. Equatorial low
3. Polar high
4. Subtropical high
Select the correct answer using the codes given below:
(a) 2, 3, 1, 4
(b) 1, 4, 2, 3
(c) 2, 4, 1, 3
(d) 1, 3, 2, 4
Ans: (c)
41. Which one of the following statements is correct? [IAS 2004]
(a) Jet streams are best developed in winters
(b) Jet streams have often developed oscillations
(c) Jet streams greatly influence our surface weather
(d) All the above three are correct in respect of jet streams
Ans: (d)
42. Arrange the following gases of the atmosphere in increasing order by volume:
1. Nitrogen
2. Oxygen
3. Carbon dioxide
4. Argon
(a) I, II, III, IV
(b) l, II, IV, III
(c) III, IV, II, I
(d) IV, III, II, I
Ans: (c)
43. Land masses are heated and cooled much faster than water bodies. Identify the true
statements in this regard:
1. Land gets heated by conduction
2. Water has higher specific heat
3. Only the surface layers of water are heated
4. Water gets heated by convection
(a) I, II and III
(b) II and III
(c) I and IV
(d) I, II and IV
Ans: (d)
44. When can one record the lowest temperature of air?
(a) Just before sunrise
(b) At midnight
(c) At 3 a.m.
(d) No fixed time
Ans: (a)
45. What helps to maintain the heat budget on the surface of the earth?
(a) Incoming insolation in short waves and terrestrial radiation in long waves
(b) The atmosphere absorbs heat
(c) Incoming solar radiation is reflected
(d) The earth absorbs heat
Ans: (a)
46. The water content in the atmosphere:
(a) is independent of temperature
(b) increases as temperature increases
(c) decreases as temperature increases
(d) either increases or decreases with temperature increase
Ans: (c)
47. An upper air wind system with very high velocities in certain parts of the atmosphere is
called:
(a) a cyclone
(b) an anticyclone
(c) jet stream
(d) a tsunami
Ans: (c)
48. Which one of the following conditions is NOT necessary for precipitation to occur?
[NDA 2002]
(a) The air must be warm
(b) The air must be saturated
(c) The air must be cooled below its dew point
(d) The air must contain hygroscopic particles
Ans: (a)
49. Very strong and cold icy winds that blow in the Polar regions are called: [CPO SI 2003]
(a) typhoons
(b) tornadoes
(c) blizzards
(d) polar winds
Ans: (c)
50. The plane of contact of the troposphere and stratosphere is known as :
(a) mesosphere
(b) ionosphere
(c) stratopause
(d) tropopause
Ans: (d)
51. The velocity of winds is related to :
(a) the amount of moisture they carry
(b) the nearness to the sea
(c) pressure gradient in the direction of their flow
(d) the direction in which they blow
Ans: (c)
52. Increase in carbon dioxide in atmosphere causes: [Railways 1994]
(a) rise in earth temperature
(b) fall in earth temperature
(c) uniform earth temperature
(d) increase in Ultraviolet rays
Ans: (a)
53. In the Southern hemisphere the Westerlies blow from :
(a) north
(b) north east
(c) north west
(d) south east
Ans: (c)
54. Which of the following sequences of atmospheric layers is correct from below?
(a) Stratosphere, Ionosphere, Tropopause, Troposphere
(b) Ionosphere, Troposphere, Stratosphere, Tropopause
(c) Troposphere, Tropopause, Stratosphere, Ionosphere
(d) Tropopause, Troposphere, Ionosphere, Stratosphere
Ans: (c)
55. The layer of the atmosphere which provides ideal conditions for flying on et aeroplanes
is :
(a) troposphere
(b) stratosphere
(c) ionosphere
(d) exosphere
Ans: (b)
56. Cyclone is a system of wind blowing: [CBI 1991]
(a) spirally outwards from a high pressure region
(b) spirally towards low pressure region
(c) in a straight line from high to low pressure region
(d) from Ball of Bengal towards Bangladesh annually
Ans: (b)
57. Consider the following statements regarding general characteristics associated with
tropical cyclones
1. Tropical cyclones move with very low velocity over the oceans but become strong while moving over the land areas.
2. They are confined to a particular period of the year (mainly summer) and normally move
from east to west.
Which of the statement(s) given above is/are correct? [IAS 2009]
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (b)
58. Which one of the following constituents of the atmosphere causes greatest changes in
climate and weather? [NDA 1995]
(a) Nitrogen
(b) Oxygen
(c) Ozone
(d) Water Vapour
Ans: (d)
59. Match the following: [Railways, 1994]
A. South China Sea 1. Cyclone
B. Arafura Sea 2. Tornado
C. Gulf of Mexico 3. Typhoon
D. Bay of Bengal 4. Willy-Willy
A B C D
(a) 1 4 3 2
(b) 4 1 2 3
(c) 3 4 2 1
(d) 3 2 4 1
Ans: (c)
60. Match the following: [CDS 2001]
Local wind Country
A. Chill 1. Russia
B. Brickflelder 2. Australia
C. Khamsin 3. Tunisia
D. Purga 4. Egypt
A B C D
(a) 3 4 2 1
(b) 1 2 4 3
(c) 1 4 2 3
(d) 3 2 4 1
Ans: (d)
61. Consider the following statements with reference to tornadoes:
1. Tornadoes are smaller and more intense than hurricanes.
2. Tornadoes are most abundant along the eastern coast of India.
3. The average tornado lasts for less than one hour.
4. Tornadoes are most common in the afternoons in the early summer.
Which of these statements are correct? [CDS 2002]
(a) 1, 3 and 4
(b) 2, 3 and 4
(c) 1, 2 and 4
(d) 1, 2 and 3
Ans: (a)
62. The hot dry local winds that blow on the eastern side of the Alps Mountain are known
as: [NDA 2003]
(a) Chinook
(b) Foehn
(c) Khamsin
(d) Sirocco
Ans: (b)
63. Which one of the following characteristics is NOT associated with the tropical
cyclones? [NDA 2002]
(a) Before the cyclone arrives the air becomes very still and temperature and humidity are
high
(b) As the front of the vertex arrives, gusty winds develop and thick clouds appear
(c) As the cold front passes, the weather changes very rapidly
(d) Calm conditions return when the eye of the cyclone arrives
Ans: (d)
64. Which of the following is/are wrongly matched?
1. Typhoon : China Sea
2. Tornado : Mid-Western United States
3. Hurricane : West Indies
4. Willy-Willies : Canada
(a) 2 and 4
(b) 1, 2 and 4
(c) 2 and 3
(d) 4 only
Ans: (d)
65. The clouds extending from one side of horizon to other as 3 dark grey sheet having
uniform base are called: [IAS 2004]
(a) Stratus clouds
(b) Cumulus clouds
(c) Cirrus clouds
(d) Nimbus clouds
Ans: (a)
66. Because of which one of the following factors, clouds do not precipitate in deserts?
[CDS 2009]
(a) Low pressure
(b) Low humidity
(c) High wind velocity
(d) High temperature
Ans: (b)
67. Consider the following statements:
1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the Earth's
surface.
2. The proportion of ozone in the atmosphere increases to a maximum at about 60 km from
Earth's surface.
Which of the statements given above is/are correct? [IAS 2008]
(a) 1only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (a)
68. The albedo of which one among the following is the highest? [IAS 2008]
(a) Cirrus cloud
(b) Cumulonimbus cloud
(c) Melting snow
(d) Sand
Ans: (a)
69. Of the solar energy coming into the Biosphere, what percentage of it is actually used in the photosynthesis? [IAS 2008]
(a) Less than 1%
(b) Between 1% and 15%
(c) Between 15% and 2%
(d) More than 2%
Ans: (d)
70. Which of the following statements characterize the anticyclones?
1. Anticyclones are low pressure systems.
2. They are characterized by divergent wind circulation.
3. They are indicative of dry weather conditions.
Select the correct answer using the codes given below: [NDA 2008]
(a) 2 and 3
(b) 1 and 3
(c) 1, 2 and 3
(d) 1 only
Ans: (a)
71. Evening sun is not a shot as the mid-day sun. What is the reason? [NDA 2008]
(a) In the evening, radiations travel slowly
(b) In the evening, the temperature of the sun decreases
(c) Ozone in atmosphere absorbs more light in the evening
(d) In the evening, radiations travel larger distance through atmosphere
Ans: (d)
72. Mist is a result of which one of the following? [CDS 2008]
(a) Condensation
(b) Evaporation
(c) Sublimation
(d) Saturation
Ans: (a)
73. Consider the following statements:
1. The monsoon climate is found in Northern Australia.
2. The China type climate is f6und in Argentina.
Which of the statements given above is/are correct? [Asstt Comm 2008]
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (b)
74. Consider the following statements: [Asstt Comm 2008]
1. Rainfall in the doldrums is of convectional nature.
2. Convectional rainfall is highly localized and is associated with minimum cloudiness.
Which of the statements given above is/are correct?
(a) 1 only
(b) Both 1 and 2
(c) 2 only
(d) Neither 1 nor 2
Ans: (a)
75. Consider the following statements:
1. Either of the two belts over the oceans at about 30°to 35°Nand S Latitudes is known as
Horse Latitude.
2. Horse latitudes are low pressure belts.
Which of the statements given above is/are correct? [IAS 2007]
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (a)
76. Consider the following statements:
1. The annual range of temperature is greater in the Pacific Ocean than that in the Atlantic
Ocean.
2. The annual range of temperature is greater in the Northern Hemisphere than that in the
Southern Hemisphere.
Which of the statements given above is/are correct? [IAS 2007]
(a) 1 only
(b) 2 only
(c) Both 1and 2
(d) Neither 1 nor 2
Ans: (b)
77. Consider the following statements:
1. In the tropical rainforest of Brazil, the average diurnal range of temperature is much
greater than the average annual range of temperature.
2. In the humid subtropical climate of Kyushu island of Japan, the rainfall for the year
almost totals that of the rainfall in tropical rainforest.
Which of the statements given above is/are correct? [IAS 2007]
(a) 1only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (c)
78. Consider the following statements:
1. The variation in average annual range of temperature at1 5° latitude of Southern
Hemisphere is much less than that at 15° latitude of Northern Hemisphere.
2. At latitudes pole ward of 35° the incoming radiation exceeds the outgoing radiation in.
Northern Hemisphere, whereas in Southern Hemisphere the outgoing radiation exceeds
the incoming radiation.
Which of the statements given above is/are correct? [IAS 2007]
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (a)
79. Which one or the following climates is found in coastal areas of Californian North
America, Central Chile in South America and South-West tip of West Australia? [IAS
2007]
(a) Tropical savanna
(b) Mediterranean
(c) Humid Continental
(d) Low-latitude steppe
Ans: (b)
80. Consider the following statements:
1. A hurricane acquires its spin from the Coriolis effect.
2. The diameter of the hurricane decreases as it moves away from low latitudes.
3. The diameter of a hurricane is never below 150 km.
Which of the statements given above is/are correct? [IAS 2007]
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Ans: (c)
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